Home / 215,813.39-323,720.09-91,155.47

Finding the Fourth Proportional to 215,813.39, 323,720.09 and 91,155.47

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Solution

The fourth proportional to 215,813.39, 323,720.09 and 91,155.47 is: 136,733.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,813.39 : 323,720.09 = 91,155.47 : x
  2. Step 2: Convert to fraction form
    215,813.39/323,720.09 = 91,155.47/x
  3. Step 3: Cross multiply
    215,813.39x = 323,720.09 × 91,155.47
  4. Step 4: Simplify right side
    215,813.39x = 29,508,856,496.62
  5. Step 5: Solve for x
    x = 29,508,856,496.62/215,813.39
  6. Step 6: Final answer
    x = 136,733.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.